Income Taxes - Significant Components of Income Before Income Taxes as Used for Income Tax Purposes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Components of income before income taxes as used for income tax purposes
Domestic	$ 2,427.6	$ 2,106.8	$ 2,317.9
Foreign	145.5	141.8	201.3
Income before income taxes	$ 2,573.1	$ 2,248.6	$ 2,519.2